Main.java Source code

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Here is the source code for Main.java

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//package com.java2s;
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
 * Other names may be trademarks of their respective owners.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
 * http://www.netbeans.org/cddl-gplv2.html
 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
 * specific language governing permissions and limitations under the
 * License.  When distributing the software, include this License Header
 * Notice in each file and include the License file at
 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the GPL Version 2 section of the License file that
 * accompanied this code. If applicable, add the following below the
 * License Header, with the fields enclosed by brackets [] replaced by
 * your own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * Contributor(s):
 *
 * The Original Software is NetBeans. The Initial Developer of the Original
 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
 * Microsystems, Inc. All Rights Reserved.
 *
 * If you wish your version of this file to be governed by only the CDDL
 * or only the GPL Version 2, indicate your decision by adding
 * "[Contributor] elects to include this software in this distribution
 * under the [CDDL or GPL Version 2] license." If you do not indicate a
 * single choice of license, a recipient has the option to distribute
 * your version of this file under either the CDDL, the GPL Version 2 or
 * to extend the choice of license to its licensees as provided above.
 * However, if you add GPL Version 2 code and therefore, elected the GPL
 * Version 2 license, then the option applies only if the new code is
 * made subject to such option by the copyright holder.
 */

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

import javax.xml.transform.dom.DOMSource;

import javax.xml.validation.Schema;
import javax.xml.validation.Validator;

import org.w3c.dom.Attr;

import org.w3c.dom.DOMException;

import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;

import org.w3c.dom.NodeList;

import org.xml.sax.ErrorHandler;

import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

public class Main {
    /**
     * Check whether a DOM tree is valid according to a schema. Example of
     * usage:
     * <pre>
     * Element fragment = ...;
     * SchemaFactory f = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
     * Schema s = f.newSchema(This.class.getResource("something.xsd"));
     * try {
     *     XMLUtil.validate(fragment, s);
     *     // valid
     * } catch (SAXException x) {
     *     // invalid
     * }
     * </pre>
     *
     * @param data   a DOM tree
     * @param schema a parsed schema
     * @throws SAXException if validation failed
     * @since org.openide.util 7.17
     */
    public static void validate(Element data, Schema schema) throws SAXException {
        Validator v = schema.newValidator();
        final SAXException[] error = { null };
        v.setErrorHandler(new ErrorHandler() {
            @Override
            public void warning(SAXParseException x) throws SAXException {
            }

            @Override
            public void error(SAXParseException x) throws SAXException {
                // Just rethrowing it is bad because it will also print it to stderr.
                error[0] = x;
            }

            @Override
            public void fatalError(SAXParseException x) throws SAXException {
                error[0] = x;
            }
        });
        try {
            v.validate(new DOMSource(fixupAttrs(data)));
        } catch (IOException x) {
            assert false : x;
        }
        if (error[0] != null) {
            throw error[0];
        }
    }

    private static Element fixupAttrs(Element root) { // #140905
        // #6529766/#6531160: some versions of JAXP reject attributes set using setAttribute
        // (rather than setAttributeNS) even though the schema calls for no-NS attrs!
        // JDK 5 is fine; JDK 6 broken; JDK 6u2+ fixed
        // #146081: xml:base attributes mess up validation too.
        Element copy = (Element) root.cloneNode(true);
        fixupAttrsSingle(copy);
        NodeList nl = copy.getElementsByTagName("*"); // NOI18N
        for (int i = 0; i < nl.getLength(); i++) {
            fixupAttrsSingle((Element) nl.item(i));
        }
        return copy;
    }

    private static void fixupAttrsSingle(Element e) throws DOMException {
        removeXmlBase(e);
        Map<String, String> replace = new HashMap<String, String>();
        NamedNodeMap attrs = e.getAttributes();
        for (int j = 0; j < attrs.getLength(); j++) {
            Attr attr = (Attr) attrs.item(j);
            if (attr.getNamespaceURI() == null && !attr.getName().equals("xmlns")) { // NOI18N
                replace.put(attr.getName(), attr.getValue());
            }
        }
        for (Map.Entry<String, String> entry : replace.entrySet()) {
            e.removeAttribute(entry.getKey());
            e.setAttributeNS(null, entry.getKey(), entry.getValue());
        }
    }

    private static void removeXmlBase(Element e) {
        e.removeAttributeNS("http://www.w3.org/XML/1998/namespace", "base"); // NOI18N
        e.removeAttribute("xml:base"); // NOI18N
    }
}